WD 1TB External hard drive not working

July 3, 2012 at 03:17:05
Specs: Windows 7
I have 1 tb external hard disk and when i connect to computer, nothing is coming even usb is not recognizing. i have changed my usb cable 3.0 but same problem. led of the hard is only flashing. how will i repair it, please help me. my all data are inside this hard disk.

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July 3, 2012 at 04:47:54
You could take the external caddy apart, take out the drive and slave it in your pc. it 'could' be that the logic board/power board on the caddy has failed.

Slaving the drive on your pc will allow you access to your data. Back it up.

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July 3, 2012 at 07:19:10
I'm assuming you aun no one else has DROPPED the external drive.
If you HAVE dropped it, the external drive eclosure's circuits or the hard drive inside the eternal enclosure or both may have been damaged.
The external drive enclosure is relatively inexpensive to replace.
Th hard drive can be removed from the external enclosure and connected to a computer one way or another to determine if it's still working okay.

When the external hard drive is plugged in....
Go to Disk Management.
E.g. type diskmgmt.msc in the Start Search box, press Enter.

When you scroll down in Disk Management, the total space on the ~ 1tb drive (it will be slightly smaller than that) is shown on the left beside the rectangular box on the right..

Disk x
the size

What does it say in the rectangular box ?

If it says RAW or unallocated,

See response 2 regarding examples of which programs you could try to use to repair the data damage:

See response 2 regarding how you use Safely Remove Hardware:

If you DO NOT see an entry for the ~ 1 tb external drive in Disk Management.....

- the external drive MUST be plugged into a USB port that can actually supply 500 ma of current

- the external drive may NOT be detected correctly when it's plugged into certain USB ports

Troubleshooting USB device problems including for flash drives, external drives, external memory card readers.
See Response 1:

In addition to the info there....

For some desktop mboards you can have problems when an external hard drive is plugged into one of a pair of USB ports on the back of the case that are connected to the same USB controller, if there is another device plugged into the other USB port for the pair, because the pair can't actually supply 500 ma per port - they can only supply 500 ma in total. Usually those pairs of ports are one above the other, not beside each other. If you have two devices plugged into such a pair of ports, try plugging one of them in elsewhere on the back of the computer.

For MANY laptop and netbook mboards similar applies. The built in USB ports often cannot actually supply 500ma per port - they supply 500 ma in total for two ports that are close to each other. In that case, the external drive should work fine if it's the ony thing plugged into the USB ports built into the laptop or netbook, or if you have more than two ports, the only thing plugged into two ports close to each other.

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July 4, 2012 at 00:03:43
It's not detecting to the pc at all....

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Related Solutions

July 4, 2012 at 00:06:22
same problem...nothing happened. how can i repair it?

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July 4, 2012 at 00:47:58
what have you tried? explain in detail what you have tried and lets see if we can figure out another solution.

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July 4, 2012 at 04:59:57
I took external caddy apart and connected to pc. I couldn't backup or even it's not detecting in pc. only the LED flashing. The 1 TB WD external hard disk is only purchased 6 months back. i didn't drop it ever. i was using it very carefully, always. last time i was copying near about 400 gb movies from another hard disk to my hard disk it's took near about 7 hours to complete. after that i connected to pc and it was working. when i tried to safe remove the hard disk, it was not showing in pc and i unplugged and connected to pc again but from that time, it was not detecting by pc. i tried to connect another 3 pcs but not detecting. hope, you got all of this ...please help me.

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July 4, 2012 at 05:10:27
hold on, you took it out of the caddy and connected it to a pc and it wasnt being recognised, but the LED was flashing? what LED?

if you connect it to the PC either via a SATA cable or IDE cable then there are no LED's on the drive that will flash.

you HAVE to connect it DIRECTLY to the motherboard, not through a caddy, unless of course you are using a converter so that you can plug it in via USB?

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July 4, 2012 at 08:56:51
Did you read ALL of the info in response 2 ?

Did you click on the troubleshooting info link in response 2 and READ the info there ?

The led blinking all the time MAY indicate that you did NOT have it plugged into a USB port that can actually supply 500 ma of current.

"I took external caddy apart and connected to pc."....." The 1 TB WD external hard disk is only purchased 6 months back."

You have voided the drive's warranty by opening up the external drive.
It probably has a 1 year warranty.

" i didn't drop it ever. "

If ANYONE has had physical access to the eternal drive other than you, they could have dropped it and NOT told you about that.

Connecting the external enclosure without the hard drive being installed in it is relatively useless. The external enclosure (recognition of it's circuits) DOES NOT show up as a drive in Computer or Windows Explorer or in Disk Management.

If it IS being detected properly, it only shows up generically in Device Manager
under USB Controllers
- as a Mass Storage Device
- under one of the Root Hubs, problem one or the last ones listed, when you click on the Power tab, as a USB Mass Storage device that is drawing a small amount of current, e.g. 2 ma.

The hard drive that was inside the external enclosure is probably a SATA hard drive.
All SATA hard drives, 2.5" (laptop sized) or 3.5" (desktop sized) , have identical SATA data and power sockets on one end of the drive.
It can be connected to any desktop computer that has a mboard with a spare SATA data header with a standard SATA data cable, and a spare SATA power connector from the power supply.
If you connect your hard drive to a computer with a working operating system without disconnecting the hard drive that has that computer's operatin system on it, you can check out your hard drive to see if it is working properly and whether you can see the data is still on it, but you DO NOT boot the other computer from your hard drive.

When I look on the Western Digitral web site, there is NO info about a blinking led on one of their external drives.
When I searched for info on the web, e.g. using western digital external hard drive blinks led
there are MANY "hits"
- e.g.

The indicator LED is steady white when the drive is powered on but idle, and blinks off and back on when the drive is being accessed.

So - it's normal for that led to blik when it's being accessed, but it's NOT normal for it blink at a constant rate all the time

There are MANY hits that indicate other people are having the same problem with their e western dogital external hard drive as you are - the led is blinking at a constant rate not matter what they try.

That MAY indicate there is a problem with the circuitry of the external enclosure, but you can't make a waarantyu clain because you have opened up the external enclosure.

It's likely that if you replace the external encliosure with a new one, the hard drive you already have that was in it will probably work fine.

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July 10, 2012 at 04:58:38

it's normal LED which has flashing while connect all hard disk to the pc or lap top. i couldn't connect to mother board, directly and i didn't. i tried by usb cable 3.0

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July 10, 2012 at 07:26:18
'The 1 TB WD external hard disk is only purchased 6 months back.'

Ever heard of a warranty?

Some HELP in posting on Computing.net plus free progs and instructions 7 Golds

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July 11, 2012 at 00:28:51
Warranty won't be give my files and documents back, dear. finding the solution to get all the data back, too...

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July 11, 2012 at 06:18:57
Oh dear!

"i couldn't connect to mother board, directly and i didn't. i tried by usb cable 3.0"

Then what was the point of taking it apart? You need to connect the HDD directly to a motherboard via a SATA or IDE cable (depending on the type of drive) & the power will have to be connected to the PC's power supply. This is the only way to determine whether the HDD is the problem or the USB adapter. You already know it won't read via USB.

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August 5, 2012 at 07:43:07
When my Western Digital died I did some research on data recovery and found this site http://www.southjerseydata.com/west...
Since I'm close to Philadelphia I took a ride to the lab as they diagnosed the drive in front of me. My drive needed the heads replaced in a clean room. The process took about a week, but I got my data back :)

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